Brake-shoe.



FITZ WILLIAM SARGENT.

BRAKE sHoE. APPLICATION FILEDJAN. 5.19I7.

41,21 8,704. Patented Mar. 13, 1917.

f. wf! v FIIZ WILLIAM SARGENT, 0F MAHWAH, NEW JERSEY, .ASSIGNOR T0 THEAMERICAN BRAKE SI-IOE Sc FOUNDRY COMPANY, OF WILMINGTON, DELAWARE, ACORPORATION 0F DELAWARE.

BRAKE-SHOE.

Specification of Letters Patent. Patented Mal', 13, 1917.

Application led January 6, 1917'. Serial No. 140,921.

To all whom t may concern.' Be it known that I, Frrz WILLIAM vSAR GENT,a citizen of the United States, and a resident of Mahwah, in the countyof Bergen and State of New Jersey, have made and invented certain newand useful Iniprovements in Brake-Shoes, of which the following is aspecification. l

My invention relates to brake shoes, and particularly to that type orclass in which hard metal inserts are incorporated in the body of theshoe, providing a composite wearing face therefor.

The provision of hard metal inserts in the cast body of a brake shoenecessarily weakens the same, and it is an object of my invention toprovide an insert of such character that a plurality of layers ofopenwork ductile metal may be incorporated in the body of the shoe andthereby more than offset the weakening of the shoe by the presence ofthe inserts. A further object of my improved brake shoe is to so form orconstruct the inserts that the cast metal of the body of the shoe willflow freely thereabout. To this end, the inserts are formed as separateand distinct tapering members anchored in place by their generaltapering character and by openwork reinforcing members which extendthroughout the body of the shoe. rlhe cast metal of the body of the shoeis formed around each insert and anchors the same in place, as well assecuring them to the openwork reinforcing members, through the mesh ofwhich the inserts extend. A further feature is the provision of areinforcing member extending across the inner extremities of theinsert-and adjacent the back of the shoe, whereby the inserts are boundtogether and held rigidly in position during the time the body of theshoe is being cast therearound. This rear reinforcing member alsomaterially strengthens the body of the shoe.

A further object is to provide a brake shoe with inserts so formed thatthey will be held rigidly in place even though the shoe become worn andfractured in service, each insert being provided with an offset head ora connecting bar, whereby they are anchored to the strands of theadjacent reinforcing member with which the body of the shoe is provided.

Other objects and advantages will appear as the description proceeds,wherein it is to be understood that changes in the pre oise embodimentof the invention may be made within the scope of Vwhat is claimedwithout departing from the spirit thereof. .The preferred embodiment ofmy invention is disclosed in the accompanying drawings, wherein:

Figure l is a view in top plan of a brake shoe, portions thereof beingbroken away, embodying the characteristic features of my invention;

Fig. Q is a View in transverse section taken on the line 2-2 of Fig. l;

Fig. 3" is a detail View in perspective of the hard metal insert;

Fig. t is a view in transverse section of a shoe having a somewhatmodified form of insert therein;

Fig. 5 is a detail view in perspective of this type of insert;

Fig. 6 is a view in transverse section of a shoe having a somewhatfurther modified form of insert;

Fig. 7 is a detail view in perspective of this latter type of insert;and

Fig. 8 is a view in side elevation of sev eral inserts, together withthe openwork metal reinforcementprior to embodying the same in the bodyof a shoe.

.Referring specifically to the several views, my improved brake'shoe isformed with the cast metal body 10, in which is incorporated a number ofhard metal inserts 11. rlhese inserts, as illustrated in Figs. t, 5, 6and 7, are formed as entirely separate and distinct members, of taperingand general conical outline. These inserts are incorporated in the bodyof the shoe, with the smaller ends l2 terminating at the wearing facethereof. A reinforcing member'l extends throughout the body vof the shoeand is 'formeel of superposed and spaced layers of 'openwork metal, theopenings in the several` layers, being in vertical alinement, receivingthe inserts 1Q. therethrough. In order that the inserts and severallayers of openwork metal may be rigidly heldin place as the metal of thebody of the shoe is cast thereabo'ut, a supplemental reinforcing member14 is provided and extends across the rear and larger extremities of theinserts, this reinforcing member also materially strengthening thecompleted shoe. The rear and larger extremities of the inserts areprovided with offset heads 15,

which aid in holding the inserts from becoming detached from the body ofthe shoe as the latter becomes worn.

ln Figs. l, 2 and 3, the oilset heads of the inserts are joined so as'todeline coniiecting` bars between two or .more inserts, the connectingbars being relatively thin and serving to hold the inserts in properspaced relation during the time the body of the shoe is being castthereabout. T he connecting bars, being relatively thin. however, do notinterfere with the tree liow oi metal between the various interstices ofthe` reinforcing members and the inserts themselves. Y

In some instances, I prefer to form the tapering inserts, which are otgeneral conical outline, with longitudinally extending iiutes or grooves17.' These grooves increase the space between adjacent inserts andpromote the free iiow of cast metal thereabout. In order to hold theseveral layers of the reinforcing member 13 apart, and thereby aid inthe free flow or' the Vcast metal, the said layers oi openwork metal maybe provided with confronting depressions or grooves 18, as illustratedin Fig. 8.

What l claim is l. A brake shoe consisting of a cast metal body, areinforcing member composed of superposed layers of openwork metalextending throughout said body with the openings in said layers of'openwork metal in alinement, and a Iplurality of separated taperinginserts extending through the mesh of the reinforcing member andanchored thereto by the cast metal of the body of the shoe.

2. A brake shoe consisting 0i" a cast metal body, a plurality oi'separated inserts incorporated therein, tapering toward the wearing faceof the shoe, the inner extremities of the inserts provided with oi setheads, and a reinforcing' member of openwork metal incorporated in thebody of the shoe and receiving` lthe inserts therethrough.

3.y A brake shoe consisting of a cast metal body, a plurality oit'separated inserts incorporated therein, tapering toward the wearing faceofthe shoe, the inner extremities of the inserts lprovided with olfsetheads, a reinforcing member of open- Worlr metal incorporated in thebody of the shoe and receiving the inserts therethrough,

4and a supplemental reinforcing member extending throughout the body ofthe shoe and across the rear extremities of said inserts. y

4;. A brake shoe consisting of a cast metal body, a plurality of insertsembedded therein and tapering toward the wearing face of the slice, areinforcing member consisting of superposed layers of openwork metalextending throughout the body of the shoe and receiving the said insertstherethrough, the rear extremities of said inserts provided with offsetheads defining connecting bars.

5. A brake shoe consisting of a castvmetal body, a plurality'of insertsembedded therein and tapering toward the wea-ring face of the shoe, areinforcing memberV consisting of superposed layers oi openwork metalex'- tending throughout the body of the shoe and receiving the saidinserts therethrough, the rear extremities of said inserts provided withoset heads defining connectipg bars, and a supplemental reinforcingmember extending across the rear extremities of said inserts.

6. A brake shoe consisting ot a cast metal body, a plurality of insertsincorporated therein and tapering toward the wearing face of the shoeand provided with longitudinally extending grooves, a'plurality of 8superposed layers of opeiiwork metal extending throughout the body ofthe shoe and surrounding the said inserts.

7. A brake shoe consisting of a cast metal body, a plurality oi' insertsincorporated therein and tapering toward the wearing face of the shoeand provided with longitudinally extending grooves, a plurality ofsuperposed layers of openwork metal extending throughout the body of theshoe and surrounding the said inserts, the rear extremities of saidinserts provided with offset heads.

8. A brake shoe consisting of a cast metal body', a plurality of insertsincorporated 100 therein and tapering toward the wearing face oi" theshoe and provided with longitudinally extending grooves, a yplurality ofsuperposed layers of openwork metal extending throughout the body of theshoe 105 andl surrounding the said inserts, the rear extremities of saidinserts provided with oitset heads, and a supplemental reinforcingmember extending throughout the body of the shoe and across the rearextremities of 11.0

Gopes of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents,

f Washington, D. C.

